article: My name is Peter.I am 12.I have one brother and one sister.My brother is 15 and my sister is 9.I have a friend.He is an English boy.His name is Tanaka.He is in my class.I have a dog, too.Its name is Billy.Billy is 2.I like sports.I play basketball, soccer and volleyball after class .I have one pencil case, two English books and three Chinese books.
question: Peter likes   _  .
options: computer balls pens photos